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[dfsan] extend a test case to measure origin memory usage 

This is to support D101204.

Reviewed By: gbalats

Differential Revision: https://reviews.llvm.org/D101877
This commit is contained in:
Jianzhou Zhao 2021-05-05 00:53:51 +00:00
parent 5b3dd2a490
commit f3e3a1d79e
1 changed files with 11 additions and 2 deletions
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13
compiler-rt/test/dfsan/release_shadow_space.c
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@ -1,5 +1,7 @@
// DFSAN_OPTIONS=no_huge_pages_for_shadow=false RUN: %clang_dfsan %s -o %t && setarch `uname -m` -R %run %t
// DFSAN_OPTIONS=no_huge_pages_for_shadow=true RUN: %clang_dfsan %s -o %t && setarch `uname -m` -R %run %t
// DFSAN_OPTIONS=no_huge_pages_for_shadow=false RUN: %clang_dfsan %s -DORIGIN_TRACKING -mllvm -dfsan-fast-16-labels -mllvm -dfsan-track-origins=1 -o %t && setarch `uname -m` -R %run %t
// DFSAN_OPTIONS=no_huge_pages_for_shadow=true RUN: %clang_dfsan %s -DORIGIN_TRACKING -mllvm -dfsan-fast-16-labels -mllvm -dfsan-track-origins=1 -o %t && setarch `uname -m` -R %run %t
//
// REQUIRES: x86_64-target-arch
@ -72,9 +74,16 @@ int main(int argc, char **argv) {
const size_t mmap_cost_kb = map_size >> 10;
const size_t mmap_shadow_cost_kb = sizeof(dfsan_label) * mmap_cost_kb;
#ifdef ORIGIN_TRACKING
const size_t mmap_origin_cost_kb = mmap_cost_kb;
#else
const size_t mmap_origin_cost_kb = 0;
#endif
assert(after_mmap >= before + mmap_cost_kb);
assert(after_mmap_and_set_label >= after_mmap + mmap_shadow_cost_kb);
assert(after_mmap_and_set_label2 >= before + mmap_cost_kb + mmap_shadow_cost_kb);
assert(after_mmap_and_set_label >=
after_mmap + mmap_shadow_cost_kb + mmap_origin_cost_kb);
assert(after_mmap_and_set_label2 >=
before + mmap_cost_kb + mmap_shadow_cost_kb + mmap_origin_cost_kb);
// RSS may not change memory amount after munmap to the same level as the
// start of the program. The assert checks the memory up to a delta.